查询词典 above ground

The mesquite common on North American deserts in both tree and shrub forms, does not begin to grow above ground until its root system is completely developed, ensuring the plant a supply of moisture.

灌木和树的根有助于固定沙漠中的土壤，它们的茎和树枝同时起屏障的作用，防止风从沙漠表面吹起大堆的沙。如果沙漠要支持生命，这种作用必不可少。

5 Meters. The mesquite common on North American deserts in both tree and shrub forms, does not begin to grow above ground until its root system is completely developed, ensuring the plant a supply of moisture.

豆树属植物不论是乔木和灌木，在北美沙漠中常常可见，在它根部系统完全生长发达到能保证提供充足的水分时才长出地面。

This study was carried out in collective-owned summer grassland in Ganchaitan, which is located at the south foot of eastern Lenglongling Mountain (a branch of north Qilian Mountain), with yak and Tibetan sheep miscellaneously grazed on it. The grassland type could be classified as alpine meadow, dominated by Potentilla froticosa shrub. This study, under grads grazing stress, focused on the community structure, composition, species diversity, above-ground biomass of PFS, by using pane net sampling based on spatial distribution in stead of temporal succession. Results showed that: Grazing stress negatively related to the distance between grazing area and resident area.

以祁连山北支冷龙岭东段南麓的甘柴滩夏季牧场集体长期混合放牧的高寒金露梅Potentilla froticosa灌丛草场为对象，利用空间分布代替时间演替的方法，采用方格网法取样分析调查，对不同放牧压力梯度下金露梅灌丛群落的结构、组成、物种多样性、地上生物量进行研究，结果表明：①放牧居住点由远到近，放牧压力梯度不断增加，金露梅株高、密度、覆盖度、地上生物量和丛间草地的地上生物量均有不同程度的降低，地上的总生物量降低幅度达84.77%。

Actually,"Underground" is a misnomer , because more than half the shops are above ground.

实际上，"地下"这个名称用之不当，因为半数以上的店铺是在地面上的。

The biological characteristics and the rhythm of growth and development of cultivated Asiatic moonseed (Menispermum dahuricum DC.) were studied in terms of morphological characteristics, habitat conditions, phenological phase, rhizome and main vine above ground.

以人工栽培的北豆根为研究对象，从形态特征、生境条件、物候期、地下根状茎及地上主蔓生长等方面，对北豆根生物学特性及生长发育规律进行了研究。

Abrupt insulation changes cause very large concentrated electrical stresses. These stresses can be eliminated by terminating the cable above ground in an expensive device known as a "pothead".

绝缘层的突变引起非常大的集中的电应力，这可通过电缆穿出地面时采用昂贵的称为"电缆头"的端部来消除。

There is a public viewing gallery with breathtaking panoramic view of London in the large glass atrium at exactly 312.5 m above ground level.

其中一个离地面312.5米高的玻璃长廊可供公众观赏激动人心的伦敦全景。

Based on the data of 5 years in 1970s with duct present and those of December 1990, refractivity at height of 1 km, the average gradient of refractivity and surface refractivity are obtained by regression of the refractivity profiles to exponential models. And it is found that the constants in the exponential relation of refractivity of 1 km above ground and the mean vertical refractivity gradient in the first kilometer height with the surface value of refractivity are 110.6, 0.002 9 and -8.6, 0.004 7 respectively according the data of the 1970s?

对上世纪70年代中5年内波导出现的数据和1990年12月份的全部数据的研究表明：贴地波导出现时，它们的值及其和Ns指数关系的常数分别是110.6、0.002 9和-8.6、0.004 7，地面上1 km处的折射率N1k及地面上第一公里内的平均折射率梯度dN1和地面折射率Ns的相关性比没有波导出现的情况好；而这两者相比，前者的结果又比后者好。

For every one foot of retaining wall above ground, there must be two feet below.

每一个山脚挡土墙地上，必须有两个英尺以下。

Unfortunately, Route 66 will only take them halfway there underground. The rest of the way, they have to cover on foot, above ground. C-Note eyes the three towers surrounding the yard. If they show their faces, they'll be like ducks in a shooting gallery. But there's no other way.

不幸的是，地下的"66号公路"只能通到半路，余下的路程他们得在地面上行进。C-Note看着环绕院子的3座警戒塔，如果他们在地上露面，非成活靶子不可，但是现在没有别的办法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。